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204 Open 1,489 Closed
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Issues list

ENH: Add warning when DataFrame.groupby drops NA keys Enhancement Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Needs Discussion Requires discussion from core team before further action
#61339 opened Apr 22, 2025 by tehunter
2 of 3 tasks
1
2
BUG: NA are coerced in to NaN by concat Bug Dtype Conversions Unexpected or buggy dtype conversions Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate PDEP missing values Issues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprint Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#61303 opened Apr 17, 2025 by davetapley
3 tasks done
4
BUG: reindex (and atleast several other methods) do not respect fill_value=None Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Needs Discussion Requires discussion from core team before further action PDEP missing values Issues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprint
#61291 opened Apr 15, 2025 by TimAllen576
3 tasks done
1
BUG: DataFrame.min with skipna=True raises TypeError when column contains np.nan and datetime.date Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Reduction Operations sum, mean, min, max, etc.
#61204 opened Mar 31, 2025 by tanjt107
3 tasks done
@MayurKishorKumar @Mohit-Kundu
4
BUG: Performance issue with fillna() after merging DataFrames Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Needs Info Clarification about behavior needed to assess issue Performance Memory or execution speed performance
#61180 opened Mar 26, 2025 by sjfakharian
2 of 3 tasks
2
BUG: Added deprecation warning to Timestamp constructor Deprecate Functionality to remove in pandas Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Timestamp pd.Timestamp and associated methods
#61149 opened Mar 20, 2025 by j-hendricks Loading…
1 of 5 tasks
3.0
1
9
ENH: fillna enhancement with method='nearest' Enhancement Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Needs Info Clarification about behavior needed to assess issue
#61124 opened Mar 15, 2025 by mennowitteveen
1 of 3 tasks
1
BUG: ValueError: Length of values (5) does not match length of index (4) when subtracting two series with MultIndex and Index and nan values Bug Indexing Related to indexing on series/frames, not to indexes themselves Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate MultiIndex
#60908 opened Feb 11, 2025 by ssche
3 tasks done
1
@rit4rosa
4
Bug cov nat Datetime Datetime data dtype Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#60898 opened Feb 9, 2025 by fbourgey Loading…
1
15
BUG: Add fillna at the beginning of _where not to fill NA. #60729 Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#60772 opened Jan 23, 2025 by sanggon6107 Loading…
4 of 5 tasks
1
42
BUG: Series.mask incorrectly replaces positions of pd.NA in the cond argument Arrow pyarrow functionality Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate NA - MaskedArrays Related to pd.NA and nullable extension arrays
#60729 opened Jan 18, 2025 by kartoria
3 tasks done
1
@sanggon6107
6
TST (string dtype): clean-up interpolate tests Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Stale Strings String extension data type and string data Testing pandas testing functions or related to the test suite
#60653 opened Jan 3, 2025 by jorisvandenbossche Loading… 3.0
3
BUG: MultiIndex union/difference not commutative Bug Index Related to the Index class or subclasses Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate MultiIndex Needs Triage Issue that has not been reviewed by a pandas team member setops union, intersection, difference, symmetric_difference
#60642 opened Jan 2, 2025 by ssche
2 of 3 tasks
8
BUG?: using None as replacement value in replace() typically upcasts to object dtype API - Consistency Internal Consistency of API/Behavior Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate replace replace method
#60284 opened Nov 12, 2024 by jorisvandenbossche
2
ENH: Add area_limit to `fillna Enhancement Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Needs Discussion Requires discussion from core team before further action
#60161 opened Oct 31, 2024 by joshdunnlime
2 of 3 tasks
3
BUG: skipna=True operations don't skip NaN in FloatingArrays Bug ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate PDEP missing values Issues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprint Reduction Operations sum, mean, min, max, etc.
#59965 opened Oct 4, 2024 by carlocastoldi
3 tasks done
1
5
ENH: Restore the functionality of .fillna Dtype Conversions Unexpected or buggy dtype conversions Enhancement Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Needs Discussion Requires discussion from core team before further action Needs Info Clarification about behavior needed to assess issue
#59831 opened Sep 18, 2024 by tomprimozic
1 of 3 tasks
3
API: handling of missing values in Index.__contains__ API - Consistency Internal Consistency of API/Behavior Index Related to the Index class or subclasses Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#59765 opened Sep 9, 2024 by jorisvandenbossche 4.0
2
BUG: converting null timedelta to int with astype() changes NaT to -9223372036854775808 Bug Dtype Conversions Unexpected or buggy dtype conversions Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Needs Discussion Requires discussion from core team before further action
#59711 opened Sep 4, 2024 by sfc-gh-mvashishtha
2 of 3 tasks
2
BUG: isna on pyarrow backed Series is returning Series with bool dtype instead of bool[pyarrow] Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Needs Discussion Requires discussion from core team before further action pyarrow dtype retention op with pyarrow dtype -> expect pyarrow result
#59431 opened Aug 6, 2024 by thesword53
2 of 3 tasks
1
9
BUG: Series.gt (and other comparison methods) can fail with dtype=object Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Numeric Operations Arithmetic, Comparison, and Logical operations
#59418 opened Aug 5, 2024 by warwickmm
2 of 3 tasks
@maushumee
12
BUG: In main, using resample().interpolate(inplace=True) raises an exception Bug Deprecate Functionality to remove in pandas Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Resample resample method
#58690 opened May 12, 2024 by Dr-Irv
3 tasks done
1
9
BUG: np.bool_(False) & pd.NA gives pd.NA Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate NA - MaskedArrays Related to pd.NA and nullable extension arrays Needs Triage Issue that has not been reviewed by a pandas team member
#58427 opened Apr 25, 2024 by jbrockmendel
4
Add strict_na keyword to the assert_.._equal methods for object dtype to help with deprecation Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Stale Testing pandas testing functions or related to the test suite
#58072 opened Mar 29, 2024 by jorisvandenbossche • Draft
4 tasks
6
BUG: CONTAINS_OP run on pd.NA results in pd.NAType.__bool__ call Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#57989 opened Mar 25, 2024 by filip-komarzyniec
3 tasks done
8
ProTip! Adding no:label will show everything without a label.